IBM PC 300GL Type 6561, Техническое руководство

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Chapter 4. Power Supply
Chapter 4. Power Supply
The power supply requirements are supplied by a 85-watt (PC 300GL Model 6561) or 145-watt
(PC 300GL Model 6591) power supply. The power supply converts the ac input voltage into four dc
output voltages and provides power for the following:
Ÿ
System board
Ÿ
Adapters
Ÿ
Internal DASD drives
Ÿ
Keyboard and auxiliary devices
A logic signal on the power connector controls the power supply; the front panel switch is not directly
connected to the power supply.
Power Input
The following figure shows the input power specifications. The power supply has a manual switch to
select the correct input voltage.
Power Output
The power supply outputs shown in the following figures include the current supply capability of all the
connectors, including system board, DASD, PCI, and auxiliary outputs.
Note: Simultaneous loading of +5 V ac and +3.52 V ac must not exceed 50 watts.
PC 300GL Model 6561
Figure 21. Power Input Requirements
Specification Measurements
Input voltage, low range 90 (min) to 137 (max) V ac
Input voltage, high range 180 (min) to 265 (max) V ac
Input frequency 50 Hz
±
3 Hz or 60 Hz
±
3 Hz
Figure 22. Power Output (145 Watt)
Output Voltage Regulation Minimum Current Maximum Current
+5 volts +5% to
−
4% 1.5 A 18.0 A
+12 volts +5% to
−
5% 0.2 A 4.2 A
−
12 volts +10% to
−
9% 0.0 A 0.4 A
−
5 volts +10% to
−
10% 0.0 A 0.3 A
+3.52 volts +2% to
−
2% 0.0 A 10.0 A
+5 volt (auxiliary) +5% to
−
10% 0.0 A .720
18
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Copyright IBM Corp. February 1998